casler



No. 614,366. Patented Nov. l5, I898.

H. CASLER'. CONSECUTIVE VIEW APPARATUS.

(Application filed Mar. 27, 1897.) No Model.) 3 Sheets-Sheet l.

WITNESSES: INVENTOR 4d JWM ATTORNEYS we "cams PETERS co, Prune-Luau.v WASHINGTON n c N0. 6|4,366. Patented NOV. [5, I898. H. CASLER.

CONSECUTIVE VIEW APPARATUS.

(A lication filed Mar. 27, 1597. (No Model.) 3 Sheets-Sheet 2.

WITNESSES: INVENTOR awmjm ATTORNEYS THE Nonms PETERS cov wow-mm msumomu, a, c.

No. 6I4,366.

Patented Noy. I5, [898 H. CASLER. CONSECUTIVE VIEW APPARATUS.

(Ap plication filed Mar. 27, 1897.)

(No Model.)

3 Sheets-Sheet 3.

v INVENTOR Mala-M ill:

WITNESSES:

' ATTOR N EYS UNITE STATES PATENT OFFICE.

HERMAN OASLER, OF OANASTOTA, NEIV YORK, ASSIGN OR TO THE AMERICAN MUTOSOOPE COMPANY, OF NEW YORK, N. Y.

CONSECUTIVE-VIEW APPARATUS.

SPECIFICATION forming part of Letters Patent No. 614,366, dated November 15, 1898;

Application filed March 2'7, 1897. Serial No. 629,522. (No model.)

To all whom it may concern.- ism of a consecutive-view-projecting appara- Be it known that I, HERMAN OASLER, a citi tus embodying my invention, the side of the Zen of the United States,residing at Oanastota, inclosing case having been removed. Fig. 2 in the county of Madison and State of New is a plan view and partial section of the mech- 5 York, have invented certain new and useful anism, the top of the inclosing case having Improvements in Consecutive -View Apparabeen removed; and Fig. 3 is an elevation of tus; and I do hereby declare the following to the side of the instrument opposite to that beafull, clear, and exact description of the infrom which Fig. 1 is taken. vention, such as will enable others skilled in In most consecutive-view apparatus here- [o the art to which it appertains to make and tofore used the successive views or lengths of use the same. film have been moved intermittently through My invention relates to consecutive-view the field of the apparatus, each view or length apparatus, such as the cameras employed to of film being held stationary in said field for produce upon a sensitive photographic film a a sufficient interval of time to permit suffi- :5 rapid and continuous succession of views of cient exposure or illumination, and this in- 4 a moving object, and the reproducing instrutermittent movement of the view or section ments or apparatus, projecting or direct view, of film through the field of the apparatus has employed to reproduce to the eye the moveusually been obtained by checking its movements of such objects by means of a succesment absolutely and then moving it forward 20 sion of views, such as are produced by a conat a greatly-accelerated speed. In the appasecutive-view camera; and my invention conratus herein described the film or picturesists in the novel means employed for mainstrip is fed forward continuously and unitaining the succession of view-carriers opticformly, and its motion is not interfered with ally stationary with reference to the object or checked in any way, each view or length of 7 5 2 5 photographed or with reference to the screen film being held optically, though not actually, upon which the image is thrown or the eye stationary in the field of the apparatus for a for brief inst-ants of time without interruptbrief instant by means of a reflector which ing the continuous and preferably uniform as the view or film moves follows the movemovement of the view-carriers through the ment in such a manner as to keep the view o feeding mechanism and in the novel combior length of film momentarily in optical relanation, construction, and arrangement of the tionship with and optically stationary with parts of the apparatus. reference to the lens or observation opening The objects of my invention are, first, to of the apparatus. provide means whereby each view-carrier In the drawings 1 have illustrated my in- I 3 5 may be maintained optically stationary in the vention as applied to a projecting apparatus;

field of the apparatus for a brief instant of but since the invention does not reside in any time, so as to permit adequate exposure or portion of the mechanism characteristic of a illumination thereof without interrupting in projecting apparatus simply, it is apparent any way the continuous and preferably unithat the invention is equally applicable to a 40 form feeding of the view-carriers or film, and, consecutive-view camera or to a direct-visionsecond, to make the mechanism for accomreproducing apparatus. The same mechanplishing this purpose simple, compact, easily ism, apart from the illuminating apparatus constructed, not'liable to derangement, and and lenses, may be used in either of these comparatively inexpensive. These objects three classes of consecutive-view apparatus. 5

5 are attained in the invention herein de- In the drawings, 1 is the inclosing case of scribed, and illustrated in the drawings which the apparatus. accompany and form a part of this specifica- 2 is the roll from which the film is drawn,

tion, in which the same reference-numerals and 3 is the winding-roll. indicate the same or corresponding parts, and 4, Figs. 2 and 3, is the driving-pulley. It I09 50 in which may be belted to a suitable motor or may be Figure 1 is a side elevation of the mechandriven in any other manner. From the pulley a belt 5 runs to pulleys 6 and 7 on shafts 6 and 7, the belt passing around an idler 8. This idler is so placed that the belt is in contact with a large portion of the circumference of the pulleys upon the shafts 6 and 7. The shaft 7 carries the winding-spool 3. The shaft 6 has upon its inner end a gear 9, Fig. 2, meshing with a gear 10 upon a shaft 11, which carries the feeding-roll 12. The roll 12 is the main feeding device of the apparatus.

13 is a box or case inclosing the illuminating apparatus of a projecting apparatus.

14 is the condensing-lens, and 15 the objeotive-lens.

16 is a segmental frame provided on its face with raised edges to guide the film, as shown in Figs. 1 and 2. This segmental frame 16, as shown in Fig. 2, is revolubly mounted upon a boss 17, which is a part of the frame of the apparatus.

Upon the end of the shaft 6 is a cam 18, and upon opposite sides of this cam are friction-rollers 19 and 20, Figs. 1 and 2, carried by the segmental frame 16, and which therefore impart a reciprocating motion to the frame 16 as the cam rotates. The cam is adapted to give a practically uniform circular reciprocatingmovement to the segmental frame 16, being a heart-shaped cam.

A shaft 21 is journaled in the boss 17 and carries a light-deflector, preferably a reflector or mirror 22. The mirror is directly over the film as it passes under the segmental frame 16. The shaft 21 projects outside of the case 1 and carries an arm 23, having friction-rollers 24 and 25, Figs. 2 and 3, upon opposite sides of a cam 26, similar to cam 18, and mounted upon the same shaft 6 and like said cam adapted to communicate a practically uniform reciprocating motion to the mirror or reflector 22. The cam 26, however, is arranged to move the mirror 22 with but half the speed of movement of the segmental frame 16.

In the face of the segmental frame 16 is a view-aperture 27, of the width and length of a picture upon the film. In passing across this aperture the film is kept taut and straight by the tension upon it.

A suitable shutter 28, driven by shafts and gearing from the cam-shaft 6, may be used, if desired, though I do not limit myself to the use of a shutter.

The operation of the apparatus is as follows: hen the driving-wheel 41S rotated,the feed-drum 12 and the shaft 7, upon which the winding-roll 3 is mounted, are revolved uniformly, and the segmental frame 16 and reflector 22 are likewise reciprocated about their center. The peripheral speed of the frame 16 while it moves with the film is the same as the speed of the film, and therefore the picture remains in registry in the opening 27 while the frame 16 is moving toward the drum 12. The light passing through the View carrier is reflected by the mirror 22 through the objective-lens upon the screen.

The rate of movement of the mirror 22, being half that of the frame 16, is such as to keep the view stationary upon the screen in spite of the movement of the film. hen the frame 16 has moved forward to the limit of its travel, itis moved backward by the cam 18 slipping over the film until the opening 27 is in registry with a new picture on the strip. At the same time the mirror 22 is moved backward by the cam 26, so that when the opening 27 is again in registry with a picture the mirror is in a proper position to project this picture through the objective-lens upon the screen.

To allow for the gradual increase in diameter of the winding-roll as the film is wound upon it, the belt-wheel 7, by which the shaft 7 of this roll is driven, is not keyed to the shaft, but is mounted loosely thereon and is held thereto by the frictional connection shown in Fig. 2 and consisting of a spring 20 and a nut 30, which may be screwed up so as to increase the pressure of the spring. This frictional connection permits the belt-wheel to slip somewhat upon the shaft 7 as soon as the film is taut.

I intend the term reflector herein used to include not merely a mirror, but also a refiecting prism, which is recognized as the equivalent of a mirror.

Having thus completely described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a consecutive-view apparatus, the combination, with a strip-feedin g mechanism, a movably-mounted frame provided with a view aperture, past which said strip may pass, and means for moving said frame in the same direction and at the same speed as said strip, of a movably mounted reflector so mounted and adapted to be so moved as to hold each length of strip in registry with said view-opening in optical relationship with and optically stationary with reference to a fixed point, and means for so moving said reflector, substantially as described.

2. In a consecutive-view apparatus, the combination,with a strip-feeding mechanism, a rotatably mounted segmental frame over which the strip may pass, having a view-aperture past which said strip passes, and means for vibrating said frame alternately forward in the direction of and with the speed of movement of said strip, and then backward, of a movably-mounted reflector at the center of rotation of said frame, adapted likewise to rotate about said center and arranged to re flect the image on that portion of the strip in registry with the view-aperture at any instant, and means for vibrating said reflector back and forth synchronously with but half the angular speed of rotation of said frame, whereby while said frame is moving with said strip said reflector is caused to retain the portion of the strip in registry with the viewaperture optically stationary with respect to a fixed point, substantially as described.

3. In a consecutive view apparatus, the combination,with a uniform-speed strip-feeding mechanism adapted to feed avieW-carrying strip through the field of the apparatus, a rotatably-mounted segmental frame over which the strip may pass, having a view-aperture past which said strip passes, and a uniform-speed cam for vibrating said frame alternately forward in the direction of movement of the strip, and then backward, of a rotatably-mounted reflector at the center of rotation of said frame, adapted likewise to vibrate about said center, and a uniformspeed cam for vibratingsaid reflector back and forth synchronously with said frame, and adapted to communicate to said reflector in its forward movement a uniform speed equal to half the angular speed of the segmental frame in its corresponding movement, substantially as described.

4. In a consecutive-view apparatus, the combination,with a supply-roll having thereon a flexible view-carrying strip, a windingroll, a main strip-feeding device adapted to feed the strip from the supply to the winding roll, and means for driving said winding-roll and for operating said main feeding device so as to move the strip at a uniform speed, of a rotatably-mounted segmental frame over which the strip may pass, having a view-aperture past which said strip passes, a movably-mounted reflector at the center of rotation of said frame, adapted likewise to vibrate about said center, and uniform-motion cams for vibrating said frame and reflector, adapted to vibrate the frame and reflector forward and back, to move the frame forward with a peripheral speed equal to the speed of the strip and to move the reflector forward with an angular speed equal to half the angular speed of the segmental frame, and means for rotating said cams, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HERMAN CASLER.

Witnesses:

FRANCES A. SPERRY, HARRY M. MARBLE. 

